1. National R&D Institute for Non-Ferrous and Rare Metals, 102 Biruinței, 077145 Pantelimon, Romania
2. Materials Engineering Department, Ben-Gurion University of the Negev, David Ben Gurion Blvd 1, Beer-Sheva 84105, Israel
3. Faculty of Materials Science and Engineering, National University of Science and Technology Politehnica Bucharest, 313 Splaiul Independentei, 060042 Bucharest, Romania